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Issue Description
Whenever open to LAN, everything is good, but when I go to exit it will then crash the game. I tested this without opening to LAN, and it does not crash. So opening to LAN and then saving and quitting will crash the game

Modpack version (Do not use "latest")

Logs
For some reason my log folder does not work, I am sorry if this is needed

If applicable, please upload your crash report, or latest.log to hastebin.

Screenshots

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Additional context

Add any other context about the problem here.

I appreciate the sentiment :)

hey i got some logs from multimc when i get this crash:

[12:49:09] [Client thread/INFO] [minecraft/GuiNewChat]: [CHAT] You do not have permission to use this command
[12:49:22] [Netty Local Client IO #0/INFO] [EnderCore]: Reset configs to client values for com.enderio.core.common.config.ConfigHandler
[12:49:22] [Netty Local Client IO #0/INFO] [FluxNetworks]: FluxNetworkData has been unloaded
[12:49:22] [Netty Local Client IO #0/INFO] [mcjtylib_ng]: Client disconnected from server
[12:49:22] [Netty Local Client IO #0/INFO] [mcjtylib_ng]: Cleaning up RFTools dimensions
[12:49:22] [Netty Local Client IO #0/INFO] [Astral Sorcery]: Cleaning client cache...
[12:49:22] [Netty Local Client IO #0/INFO] [Astral Sorcery]: Cleared cached client data! Disconnected from server.
[12:49:22] [Netty Local Client IO #0/INFO] [scannable]: Building block state lookup table...
[12:49:22] [Server thread/INFO] [FluxNetworks]: FluxNetworkData has been successfully loaded
[12:49:23] [Netty Local Client IO #0/INFO] [scannable]: Built block state lookup table in 923 ms.
[12:49:23] [Netty Local Client IO #0/INFO] [schematica]: Scheduling client settings reset.
[12:49:23] [Client thread/INFO] [journeymap]: Mapping halted in C:\zMultiMC\instances\Enigmatica2Expert-1.82a\minecraft\journeymap\data\sp\New World\DIM0
[12:49:23] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: diealein lost connection: Disconnected
[12:49:23] [Server thread/INFO] [minecraft/MinecraftServer]: diealein left the game
[12:49:23] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: Stopping singleplayer server as player logged out
[12:49:26] [Server thread/INFO] [STDOUT]: [lain.mods.cos.InventoryManager:onServerStopping:234]: Server is stopping... force saving all loaded CosmeticArmor data.
[12:49:26] [Server thread/INFO] [STDOUT]: [lain.mods.cos.InventoryManager:onServerStopping:237]: 0fda0c66-0e92-482b-a467-01b1bcbeb9a6
[12:49:26] [Server thread/INFO] [STDOUT]: [lain.mods.cos.InventoryManager:onServerStopping:237]: 3b0329bb-e4e3-4a9f-ab48-4a941edecce3
[12:49:26] [Server thread/INFO] [minecraft/MinecraftServer]: Stopping server
[12:49:26] [Server thread/INFO] [minecraft/MinecraftServer]: Saving players
[12:49:26] [Server thread/INFO] [minecraft/MinecraftServer]: Saving worlds
[12:49:26] [Server thread/INFO] [minecraft/MinecraftServer]: Saving chunks for level 'New World'/overworld
[12:49:26] [Server thread/INFO] [minecraft/MinecraftServer]: Saving chunks for level 'New World'/Spectre
[12:49:26] [Server thread/INFO] [minecraft/MinecraftServer]: Saving chunks for level 'New World'/Storage Cell
[12:49:26] [Server thread/INFO] [THAUMCRAFT]: Removing aura cache for world 0
[12:49:26] [Server thread/INFO] [THAUMCRAFT]: Removing aura cache for world -343800852
[12:49:26] [Server thread/INFO] [THAUMCRAFT]: Removing aura cache for world 2
[12:49:26] [Server thread/INFO] [FML]: Unloading dimension 0
[12:49:26] [Server thread/INFO] [FML]: Unloading dimension -343800852
[12:49:26] [Server thread/INFO] [FML]: Unloading dimension 2
[12:49:27] [Thread-72/WARN] [THAUMCRAFT]: No auras found!
[12:49:27] [Thread-70/WARN] [THAUMCRAFT]: No auras found!
[12:49:27] [Thread-57/WARN] [THAUMCRAFT]: No auras found!
[12:49:27] [Thread-57/INFO] [THAUMCRAFT]: Stopping aura thread for dim 0
[12:49:27] [Thread-72/INFO] [THAUMCRAFT]: Stopping aura thread for dim 2
[12:49:27] [Thread-70/INFO] [THAUMCRAFT]: Stopping aura thread for dim -343800852
[12:49:33] [Server thread/INFO] [foamfix]: JEI search tree manager injection complete!
[12:49:35] [Server thread/INFO] [FML]: Applying holder lookups
[12:49:35] [Server thread/INFO] [FML]: Holder lookups applied
[12:49:35] [Server thread/INFO] [Actually Additions]: Unloaded WorldData!
[12:49:35] [Server thread/INFO] [FluxNetworks]: FluxNetworkData has been unloaded
[12:49:35] [Server thread/INFO] [nuclearcraft]: Server Closing...
[12:49:35] [Server thread/INFO] [mcjtylib_ng]: Cleaning up all world data: 2 data blobs
[12:49:35] [Server thread/INFO] [mcjtylib_ng]: RFTools Dimensions: server is stopping. Shutting down gracefully
[12:49:35] [Server thread/INFO] [mcjtylib_ng]: Cleaning up RFTools dimensions
Process exited with code 1.

hope this helps with this old issue, im experiencing it now on a server. Im pretty sure the version is 1.82a

This issue only happens for singleplayer worlds that are opened to LAN, not servers.
Also, I'm afraid there's nothing in that log snippet that indicates any issues.

Ah, I'm sorry then. That is indeed what im doing, i just wish i coulda given you something to help solve this. Apologies.

Hi there! Ran a LAN server too (singleplayer world Opened to LAN), and had the same problem, here's my latest.log.
latest.log

The logs would be very helpful.

I'd still like your latest.log please.